Sin System: Demonic Harem After Reincarnation

Lucian Matis was a traveler of a world where magical creatures are made. He Kevin and Adam who helped him settle in this world. Lucian liked this world because it was full of things he didn't know. He was killed by a blue demon dragon because it was his first assignment, This made him Lucian come back to life. Later, Lucian found out that he had been reborn on earth to help him get ready for the The Dark Universe mission. Something bad was waiting behind the curtain. It was found that there was a crack that let to the Dark Universe. This is a world where strange beings who could destroy the earth lived. On the other hand, Lucian's past experience will be used to build a copy of the Dark Universe that will be used to teach new recruits. This system is called the Earth Protection System. Chips were put into the brains of hosts while the Earth's Protection System was being built. Members of the earth's defender mission must now be ready for the future and have a plan to help them grow and get ahead.

A young boy chokes to death after seeing his talent result. Another gets reincarnated into his body. Upon receiving the necessary information pertaining to the world, he realizes he's now an orphan and his elder sister is a dud. Chris, now Jake who was once his sister beacon of hope was now a blown out candle. Not until he received a message only he could see. 'Welcome to PRIME' the user interface read out, 'Say cheese for more info'.

Elrick Aldof—A lousy young man whose life is full of misery and failure at all costs, unexpectedly discovers a system that magically has an infinite arsenal, full of various weapons! In the face of the irregularities in his life, he was shocked when the terrible 'Mad Wolf' virus hit Okazaki City overnight. Suddenly, the town where he lived became deserted because there were rampant zombies, and the streets were full of corpses in the form of zombies. How will Elrick Aldof act in facing the system to save his life and the lives of his relatives and close friends?

What would you do if one day, monsters appeared in your world? Will you fight to save someone? Perhaps you will fight for your life? Tejasv, a common man, faced a similar situation when monsters appeared in his home. They killed his mother, the only person in his family. Out of rage, he kills the monsters brutally. Suddenly, a voice enters his ears: Beep! Beep! ==== [Congratulations! You are qualified to live in this new world.] [You have gained territory. Fight others and build your territory stronger.] == == A system screen appears and gives skills to all humans. It encourages people to fight and invade. Now the world is being invaded by monsters and other races. Humans are forced to fight and defend their territories as lords or as subordinates of someone strong. Now, what would Tejasv do to survive? Maybe he will find a strong lord or gather strong subordinates. Will he become prey, hunter, or conqueror? Note: the cover art is not my creation, its credit belongs to its respective creator.

Little Sky, an earthling human, is the lowest ranking Knight on earth, regarded by many as the weakest Knight in existence. Little Sky has always hated that he was weak, he trained harder than anyone did, but that didnt change his status of being weak. Little Sky has always been disdained and look down upon by other Knights, they would always laugh and teas on how weak he was. He had thought of quitting so many times But, burdened by his mother's hospital costs and a big loan which is said to be left to him by his father, he had no alternative but to risk his life every day inside the demon grottos, despite his limited strength, which could barely kill the weakest demon. But all that changed when he activated the crazy Devouring system, which granted him the most powerful constitution in the universe; endless evolution, as well as the ability to devour everything. Sky would go from being the weakest to the absolute strongest, saving humanity and the entire universe from the catastrophic demon invasion. with his system nothing in this universe could stand in his way.

Everything was taken from him, the girlfriend he loved, his promotion and even the means to work elsewhere. However, everything changed when the Ethereal Adventure System arrived. a system that would give him real life money and superhuman abilities for completing task which mainly involved travelling to other worlds. Would he grasp this opportunity completely? would he become the apex of humanity. you can check this out by following his journey. I own the copyright to this cover including all parts and cover

In a world of magic and dungeons. Archie Shellford thought he had woken up in a completely different world until he found a mysterious item containing ancient texts from his previous world. When his curiosity peaked, and all his questions weren’t answered, he met a fellow Outlander. Aided by the outlander's bizarre law—The Grimoire, Archie must live his new life and discover the relationship between this world and his old world.

Meet Maximus Prime, the once abandoned, betrayed, and humiliated by his girlfriend and family. On the verge of giving up and accepting a crime he knows nothing about, Maximus was gifted with a Tycoon system. Maximus became superrich with the system and his Cybersecurity skills got to the highest level. Whenever Maximus upheld justice, he was rewarded bountifully by the system. A sneer rested on Maximus' lips: "It's time to play some dirty game." Maximus smirked, looking serious. His family, down to his ex-girlfriend and best friend, Maximus was ready to face them again. Including the hidden enemies that want him dead. Maximus was coming for them!

Jin returned from another world. The dead rise and eat the living. Without a way out, he accepts his fate and lets the undead eat him. “Was that… Me? Or rather, my body? W-What happened to me…!” [Do you want to activate the Undead System?!] A/N Many thanks to Sera Execfia for the gorgeous Cover art.

The world has gone to the dogs, thanks to an extraterrestrial overlord, and is almost destroyed. Eric and his friends survive, thanks to the system giving them 'traits'. Eric's trait is deemed useless until he completes an exclusive quest and gets an exclusive item that boosts his strength and power. How strong is an animal empath going to get in a broken world with crazy abilities?